Document aJEkJMn5GN211wLQ09VLvNVje

AR226-2277 Robert I Wevodau 05/21/2002 09:36 AM To: George L Clowes_Jr/CL/DuPont@DuPont, Ravinder Singh/CL/DuPont@DuPont, Michael T Evans/AE,'DuPont@DuPont, Michael G McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPont@DuPont, Ta-Wei Fu/SE/DuPont@DuPont cc: Stephen J Gissy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont Subject: C8 Modeling W e are anticipating th at TERA will soon release an annual exposure level for C8. Recent modeling studies have indicated that w e are at 0 .3 0 micrograms/cubic meter for estimated production rates for year 20 03 . Steve Gissy has asked that w e verify the data that w ent into the recent C8 modeling effort, and be prepared to respond quickly w ith alternatives when the new annual exposure guideline is released. Following is the basis for the modeling studies for year 2003: Area Production ( Ib/yr) FP/D FP/D FP/D FEP FEP FEP PFA 4 ,3 0 0 ,0 0 0 (FP-1 > 2 ,7 0 0 ,0 0 0 (FP-2) 2 ,5 0 0 ,0 0 0 (FP-3) 3,903,900 (LI) 3 ,9 0 3 ,9 0 0 (L2) 3 ,3 4 6 ,2 0 0 (L3) 1 ,9 7 7 ,0 0 0 George and Raj, PU Fraction to Dryer 0.0025 0.92 0.0035 0.92 0.0045 0.92 0.0051 0.0051 0.0051 0.0065 0.70 0.40 0.40 0.40 Scrubber Efficiency 85% 85% 85% 93% 93% 93% 93% Please confirm the estim ated 2 0 0 3 production rates. Mike M ., Mike E. and Cynthia, Please confirm th a t th e QPU and Fraction to Dryer values are th e correct ones to use. T a-W ei, Please provide me w ith estimated scrubber efficiences to use for year 2003 emission estimates. I need this information by Thursday of this week. Thanks for your help. Bob Wevodau TWF023013 EID515127 Ravinder Singh 05/21/2002 10:34 AM To: Robert I Wevodau/SE/DuPont@DuPont cc: George L Clowes_Jr/CL/DuPont@DuPont, Michael T Evans/AE/DuPont@DuPont Michael G McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPorvt@DuPont, Ta-Wei Fu/SE/DuPont@DuPont, Stephen J Gissy/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPorvt Subject: Re: C8 Modeling Updated FP/D production figures are as follows: FP-1 FP-2 FP-3 4,900,000 2,600,000 2,600,000 Raj S. Robert I Wevodau { : Robert I Wevodau L ' ' 05/21/2002 09:35 AM To: George L Clowes_Jr/CL/DuPont@DuPont, Ravinder Singh/CL/DuPont@DuPont, Michael T Evans/AE/DuPont@DuPont. Michael G McClusky/AE/DuPont@DuPont, Cynthia E Read/AE/DuPont@DuPont, Ta-Wei Fu/SE/DuPont@DuPont cc: Stephen J Gissy/AE/DuPont@DuPont, Chris E Sboop/AE/DuPont@DuPont, Karl G Kronberg/AE/DuPont@DuPont Subject: C8 Modeling We are anticipating th a t TERA w ill soon release an annual exposure level fo r C8. Recent modeling studies have indicated that w e are at 0.3 0 micrograms/cubic meter for estimated production rates for year 2003. Steve Gissy has asked th a t w e verify the data th a t w e n t into the recent C8 modeling e ffo rt, and be prepared to respond quickly w ith alternatives when the new annual exposure guideline is released. Following is the basis fo r the modeling studies for year 20 03 : Area Production ( lb/yr) QPU Fraction to Dryer Scrubber Efficiency FP/D FP/D FP/D FEP FEP FEP PFA 4 ,3 0 0 ,0 0 0 (FP-1) 2 ,7 0 0 ,0 0 0 (FP-2) 2 ,5 0 0 ,0 0 0 (FP-3) 3,903,900 (LI) 3 ,9 0 3 ,9 0 0 (L2> 3 ,3 4 6 ,2 0 0 (L3) 1,977,000 0.0025 0.92 0.0035 0.92 0.0045 0.92 0.0051 0.0051 0.0051 0.0065 0.70 0.40 0.40 0.40 85% 85% 85% 93% 93% 93% 93% George and Raj, Please confirm the estim ated 2003 production rates. Mike M ., Mike E. and Cynthia, TWF023014 EID515128 Please confirm that the QPU and Fraction to Dryer values are the correct ones to use. T a-W ei, Please provide me w ith estim ated scrubber efficiences to use for year 2003 emission estim ates. 1need this information by Thursday of this week. Thanks for your help. Bob Wevodau TWF023015 EID515129 Robert I Wevodau 06/21/2002 12:08 PM To: cc: Ta-We Fu/SE/DuPont@DuPont Subject: Re: C8 Modeling Ta-Wei, Bob e TWF023016 EXD515130